Specify sources dir for FMUs from outside.

  - The C sources for source code FMUs can be found using the variable
    `RuntimeSources.fmu_sources_dir`

    This does not change much by itself yet. However, we can now specify
    the location at configure time. The reason it is added now is for the
    CMake configuration which puts the files in share/omc/c/sources.
    This way it works for both build systems (CMake and autconf).

Author: mahge

OMCompiler/Compiler/SimCode/SimCodeMain.mo

@@ -753,8 +753,12 @@ algorithm
         end if;
         SimCodeUtil.resetFunctionIndex();
         varInfo := simCode.modelInfo.varInfo;
+        // The C source files are installed to the folder specified by RuntimeSources.fmu_sources_dir. Copy them from there.
+        copyFiles(RuntimeSources.commonFiles, source=Settings.getInstallationDirectoryPath() + RuntimeSources.fmu_sources_dir, destination=fmutmp+"/sources/");
+        // The headers are in the include directory.
+        copyFiles(RuntimeSources.commonHeaders, source=Settings.getInstallationDirectoryPath() + "/include/omc/c/", destination=fmutmp+"/sources/");
+
         allFiles := {};
-        allFiles := listAppend(RuntimeSources.commonHeaders, listAppend(RuntimeSources.commonFiles, allFiles));
         allFiles := listAppend(if FMUVersion=="1.0" then RuntimeSources.fmi1Files else RuntimeSources.fmi2Files, allFiles);
         if isSome(simCode.fmiSimulationFlags) then
           allFiles := listAppend(RuntimeSources.external3rdPartyFiles, allFiles);

OMCompiler/SimulationRuntime/c/RuntimeSources.mo.tpl

@@ -1,4 +1,5 @@
 encapsulated package RuntimeSources
+  constant String fmu_sources_dir = "/include/omc/c/";
   constant list<String> commonFiles={COMMON_FILES};
   constant list<String> commonHeaders={COMMON_HEADERS};
   constant list<String> fmi1Files={"fmi-export/fmu1_model_interface.c.inc","fmi-export/fmu1_model_interface.h"};